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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Aggregates from Residual Concrete
Author(s): Giorgio Ferrari, Alberto Brocchi, Fiorenza Cella, Maria Chiara Dalconi, and Federico Longhi
Publication: Special Publication
Appears on pages(s): 1-15
Keywords: ready-mixed plant, residual concrete, recycled aggregates, superabsorbant polymers, setting accelerators, ettringite, waste reduction
Abstract:The paper describes a new technology for recycling residual fresh concrete at the ready-mixed plant, which transforms the unset residual concrete from the construction site into granular materials, in short period of time and without production of waste. The method employs organic polymers and setting accelerators, which are added directly into the truck mixer and transform the residual concrete into aggregates which, after curing, can be reused for the production of new concrete. The new technology represents a significant contribution to the area of reduction of waste at the ready-mixed plant. It also contributes to the protection of natural resources, in accordance with the guidelines of the European Directive on wastes.
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